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It's a photochemical reaction in the skin to UVB radiation (295-300nm). +4
Can a thesis statement be more than one sentence?
by Answerbag Staff on March 26th, 2010
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The science of hundreds of years ago or 50 years ago is not the same as today. Won't the science of the future be very different too?
by RosieGHM Jetpacker on January 18th, 2012
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How much oxytocin do you think you have? Why?
by AnonymousGirl on January 28th, 2012
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Do you have what you consider a scientific mind?
by AnonymousGirl on January 25th, 2012
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Are you a fan of Biology, Chemistry, or Physics?
by Xenephrim on January 22nd, 2012
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You're reading How do we get Vitamin D from being in the sun?
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Thanks Warrior.
+6
by Anonymous on November 23rd, 2009